Patents by Inventor Joseph L. Archambault
Joseph L. Archambault has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10128688Abstract: This disclosure provides systems, methods, and apparatus for the limiting of voltage in wireless power receivers. In one aspect, an apparatus includes a power transfer component configured to receive power wirelessly from a transmitter. The apparatus further includes a circuit coupled to the power transfer component and configured to reduce a received voltage when activated. The apparatus further includes a controller configured to activate the circuit when the received voltage reaches a first threshold value and configured to deactivate the circuit when the received voltage reaches a second threshold value. The apparatus further includes an antenna configured to generate a signal to the transmitter that signals to the transmitter that the received voltage reached the first threshold value.Type: GrantFiled: September 9, 2016Date of Patent: November 13, 2018Assignee: QUALCOMM IncorporatedInventors: William H. Von Novak, III, Joseph L. Archambault, Adam Jason Wood, Edward Kenneth Kallal, Ryan Tseng, Gabriel Isaac Mayo
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Publication number: 20170126066Abstract: This disclosure provides systems, methods, and apparatus for the limiting of voltage in wireless power receivers. In one aspect, an apparatus includes a power transfer component configured to receive power wirelessly from a transmitter. The apparatus further includes a circuit coupled to the power transfer component and configured to reduce a received voltage when activated. The apparatus further includes a controller configured to activate the circuit when the received voltage reaches a first threshold value and configured to deactivate the circuit when the received voltage reaches a second threshold value. The apparatus further includes an antenna configured to generate a signal to the transmitter that signals to the transmitter that the received voltage reached the first threshold value.Type: ApplicationFiled: September 9, 2016Publication date: May 4, 2017Inventors: William H. Von Novak, III, Joseph L. Archambault, Adam Jason Wood, Edward Kenneth Kallal, Ryan Tseng, Gabriel Isaac Mayo
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Patent number: 9508487Abstract: This disclosure provides systems, methods, and apparatus for the limiting of voltage in wireless power receivers. In one aspect, an apparatus includes a power transfer component configured to receive power wirelessly from a transmitter. The apparatus further includes a circuit coupled to the power transfer component and configured to reduce a received voltage when activated. The apparatus further includes a controller configured to activate the circuit when the received voltage reaches a first threshold value and configured to deactivate the circuit when the received voltage reaches a second threshold value. The apparatus further includes an antenna configured to generate a signal to the transmitter that signals to the transmitter that the received voltage reached the first threshold value.Type: GrantFiled: September 18, 2012Date of Patent: November 29, 2016Assignee: Qualcomm IncorporatedInventors: William H. Von Novak, Joseph L. Archambault, Adam J. Wood, Edward Kallal, Ryan Tseng, Gabriel Isaac Mayo
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Patent number: 7061313Abstract: A dual feedback topology imparts stability to a multistage linear amplifier, particularly by improving overall amplifier phase margin at higher signal frequencies. With dual feedback, an inner feedback loop is closed around the first amplifier stage, which stage is configured as a current feedback amplifier. A second feedback loop is closed around the overall multistage amplifier. With a current feedback amplifier as the initial stage, the two feedback signals are current-mode signals and thus add to form the combined feedback signal. The frequency responses of the inner and outer feedback loops may be tailored for flat frequency response, or, where desired, may be adjusted to compensate or otherwise flatten overall amplifier frequency response.Type: GrantFiled: January 23, 2002Date of Patent: June 13, 2006Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley, Lennart Mathe
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Patent number: 6792252Abstract: An error amplifier circuit reduces distortion in an amplified signal by reflecting a feedback signal into the amplified signal using an output transformer. A first amplifier generates a reference signal corresponding to the input signal from which the amplifier output signal is derived. This reference signal represents the desired waveform for the amplified signal. An error sense element generates an error signal based on the difference between the reference and amplified signals. The error sense element preferably imparts high common-mode rejection to the error signal. A second amplifier generates the feedback signal based on amplifying the error signal, and an output transformer generates a compensated amplified signal by coupling the feedback signal into the amplified signal. The output transformer increases the reflected load impedance seen by the error amplifier, thus relieving it from driving the feedback signal into the potentially low load impedance driven by the compensated amplified signal.Type: GrantFiled: February 6, 2002Date of Patent: September 14, 2004Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley, Lennart Mathe
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Patent number: 6661217Abstract: A wideband precision current sensor employs DC-coupled and AC-coupled sensing circuits to generate lower and higher frequency sense signals; which are combined to form a wideband output signal that is proportional to a wideband current of interest. The frequency response of the wideband output signal is substantially flat across a wideband frequency range, 0 to 30 MHz for example, based on matching the frequency response of the DC- and AC-coupled sensing circuits. In an exemplary application, the current sensor provides feedback to a supply voltage (Vdd) amplifier used in RF envelope elimination and restoration (EER) applications.Type: GrantFiled: December 21, 2001Date of Patent: December 9, 2003Assignee: Telefonaktiebolaget L.M. EricssonInventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley, Lennart Mathe
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Publication number: 20030148792Abstract: An error amplifier circuit reduces distortion in an amplified signal by reflecting a feedback signal into the amplified signal using an output transformer. A first amplifier generates a reference signal corresponding to the input signal from which the amplifier output signal is derived. This reference signal represents the desired waveform for the amplified signal. An error sense element generates an error signal based on the difference between the reference and amplified signals. The error sense element preferably imparts high common-mode rejection to the error signal. A second amplifier generates the feedback signal based on amplifying the error signal, and an output transformer generates a compensated amplified signal by coupling the feedback signal into the amplified signal. The output transformer increases the reflected load impedance seen by the error amplifier, thus relieving it from driving the feedback signal into the potentially low load impedance driven by the compensated amplified signal.Type: ApplicationFiled: February 6, 2002Publication date: August 7, 2003Inventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley
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Publication number: 20030137344Abstract: A dual feedback topology imparts stability to a multistage linear amplifier, particularly by improving overall amplifier phase margin at higher signal frequencies. With dual feedback, an inner feedback loop is closed around the first amplifier stage, which stage is configured as a current feedback amplifier. A second feedback loop is closed around the overall multistage amplifier. With a current feedback amplifier as the initial stage, the two feedback signals are current-mode signals and thus add to form the combined feedback signal. The frequency responses of the inner and outer feedback loops may be tailored for flat frequency response, or, where desired, may be adjusted to compensate or otherwise flatten overall amplifier frequency response.Type: ApplicationFiled: January 23, 2002Publication date: July 24, 2003Inventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley, Lennart Mathe
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Publication number: 20030137286Abstract: A capacitorless DC-DC converter provides a controlled output voltage to a load, and includes a relatively wide bandwidth linear regulator placed in parallel with a switching regulator. Output signals from the linear regulator and switching regulator are added to form a combined output signal provided to the load. The switching regulator provides steady state current to the load, while the linear regulator provides higher-frequency transient current as needed. Because the linear regulator's transient response compensates for the limited transient response of the switching regulator, the substantial low-ESR output capacitance that is customarily required by conventional switching regulators is not needed. Further, feedback to the linear regulator taken from the combined output signal causes it to generate anti-phase ripple compensation, thereby reducing the magnitude of switching ripple in the converter's combined output signal.Type: ApplicationFiled: January 23, 2002Publication date: July 24, 2003Inventors: Donald Kimball, Joseph L. Archambault, Walter Haley
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Publication number: 20030117123Abstract: A wideband precision current sensor employs DC-coupled and AC-coupled sensing circuits to generate lower and higher frequency sense signals, which are combined to form a wideband output signal that is proportional to a wideband current of interest. The frequency response of the wideband output signal is substantially flat across a wideband frequency range, 0 to 30 MHz for example, based on matching the frequency response of the DC- and AC-coupled sensing circuits. In an exemplary application, the current sensor provides feedback to a supply voltage (Vdd) amplifier used in RF envelope elimination and restoration (EER) applications.Type: ApplicationFiled: December 21, 2001Publication date: June 26, 2003Inventors: Donald Felt Kimball, Joseph L. Archambault, Walter Haley, Lennart Mathe